From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jon Masters <jonmasters@gmail.com>
Subject: Re: Unix Time
Date: Sun, 26 Sep 2004 23:57:11 +0100
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To: Suciu Flavius <suciuflavius@tiscali.de>
Cc: linux-c-programming@vger.kernel.org

On Sun, 26 Sep 2004 20:01:04 -0700, Suciu Flavius
<suciuflavius@tiscali.de> wrote:

>   struct timeval start,stop;
>   int elapsed;
> 
>   gettimeofday(&start,NULL);
> 
>   computeWhatIWant();
> 
>   gettimeofday(&stop,NULL);
> 
> elapsed=(stop.tv_sec-start.tv_sec)*1000000+(stop.tv_usec-start.tv_usec);
> printf("sprintf:  elapsed=%5d miliseconds\n",elapsed);
 
...or you could use the POSIX difftime function if you don't mind
having a double returned.

Jon.